Who Healeth All Thy Diseases is a history of divine healing and 19thcentury health reform in the Church of God one of the earliest and most influential prePentecostal radical holiness movements. The Church of God taught that Wesleyan entire sanctification was creating a visible unity of saints that restored the New Testament church of the apostles.As the movement grew and experimented with the implications of visible sainthood physical healingmiraculous divine healing and the physical perfectionism of health reformbecame integral to the life and theology of the Church of God shaping everything from proof of membership and evidence of ministerial authority to childrearing practices and acceptable clothing styles. Physical healing manifested and embodied the movements claim that God was healing the universal church the Body of Christ by cleansing individuals from the corruption of inbred sin. By 1902 the prevailing opinion in the Church said that divine healing was an essential aspect of the gospel use of medicine was sinful and every minister had to exhibit the gifts of healing.In the early 20th century the Churchs theology and practices of healing became increasingly problematic. Tragic failures of divine healing epidemics medical advances court trials mandatory inoculations of schoolchildren and general opprobrium combined to prevent a simplistic equation of the Church of God and the church of the apostles. By 1925 the Church had reversed its radical antimedicine doctrines. Church members continued to affirm that Jesus answered prayers for healing but they no longer claimed to know exactly how he would answer prayers. With that loss of certainty healing lost its power to serve as evidence of holiness and its central place in the history of the Church of God.